Dah! why didn't I see the correct solution in the first place. There really needst to be a ledge under the top set of portals above the cage so you can't hit it from below. jandlml, the angled pannel is the best part. There is a way to do it so that you leave a portal on the level above.

I finished it, but I think I did it differently than everyone else. Put the cube on the button in the lower level to open up the fizzler screen. Shoot a portal above the cage, then drop through a portal in the floor. Shoot another floor portal under you so you occilate. The shoot a portal in the funnel target pannel as you come up through the floor and straife to the upper level. The rest is pretty simple.

Wow, that was hard. I think I probably went through every possible trick I knew, trying out different combos/possibilities. Finally stumbled upon a combo that worked. I would add to Pamsy's hints another one: To move the cube upstairs, destroy the cube in the lower chamber with the fizzler . Great one Gigopler!

Wait, so you can just throw the cube over the glass? So I went to the trouble of falling onto the fizzler emitters, walking to the edge and holding the cube safely clear of the fizzlers, and turning on the way down so the cube doesn't wind up on the wrong side of the glass for nothing?

I will try to find the intended solution later, I just have other things to do right now.

Again another map from you gig that took me a while to solve. I like that, keep up the good work :) I'm not sure if you're supposed to be able to shoot at the portal plane above that cage from crouching on that button though.